Hearing aid device



FIG. 1 is perspective view of the hearing aid device, showing a front,elevated perspective of the ear unit of the hearing aid device and aside, elevated perspective of the behind-the-ear unit of the hearing aiddevice;

FIG. 2 is a view of the hearing aid device, showing a front, lowerperspective of the ear unit and a left side view of the behind-the-earunit;

FIG. 3 is a view of the hearing aid device, showing a rear view of theear unit and a right side view of the behind-the-ear unit;

FIG. 4 is a view of the hearing aid device, showing a side view of theear unit and a top view of the behind-the-ear unit, when a bottomsurface of the behind-the-ear unit is substantially lying flat;

FIG. 5 is a view of the hearing aid device, showing a bottom view of theear unit and a bottom view of the behind-the-ear unit;

FIG. 6 is a view of the hearing aid device, showing a side view of theear unit and a rear view of the behind-the-ear unit; and,

FIG. 7 is a view of the hearing aid device, showing a top view of theear unit and a top view of the behind-the-ear unit, when the top surfaceof the behind-the-ear unit is substantially horizontal.

The ornamental design for a hearing aid device, as substantially shownand described.